rule win_protonbot_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-07-11"
        version = "1"
        description = "Detects win.protonbot."
        info = "autogenerated rule brought to you by yara-signator"
        tool = "yara-signator v0.6.0"
        signator_config = "callsandjumps;datarefs;binvalue"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.protonbot"
        malpedia_rule_date = "20230705"
        malpedia_hash = "42d0574f4405bd7d2b154d321d345acb18834a41"
        malpedia_version = "20230715"
        malpedia_license = "CC BY-SA 4.0"
        malpedia_sharing = "TLP:WHITE"

    /* DISCLAIMER
     * The strings used in this rule have been automatically selected from the
     * disassembly of memory dumps and unpacked files, using YARA-Signator.
     * The code and documentation is published here:
     * https://github.com/fxb-cocacoding/yara-signator
     * As Malpedia is used as data source, please note that for a given
     * number of families, only single samples are documented.
     * This likely impacts the degree of generalization these rules will offer.
     * Take the described generation method also into consideration when you
     * apply the rules in your use cases and assign them confidence levels.
     */


    strings:
        $sequence_0 = { e8???????? 68???????? 8d85f0feffff 50 8d85d4feffff 50 e8???????? }
            // n = 7, score = 400
            //   e8????????           |                     
            //   68????????           |                     
            //   8d85f0feffff         | lea                 eax, [ebp - 0x110]
            //   50                   | push                eax
            //   8d85d4feffff         | lea                 eax, [ebp - 0x12c]
            //   50                   | push                eax
            //   e8????????           |                     

        $sequence_1 = { e8???????? 83c418 6804010000 8d85ecfeffff c745fc00000000 }
            // n = 5, score = 400
            //   e8????????           |                     
            //   83c418               | add                 esp, 0x18
            //   6804010000           | push                0x104
            //   8d85ecfeffff         | lea                 eax, [ebp - 0x114]
            //   c745fc00000000       | mov                 dword ptr [ebp - 4], 0

        $sequence_2 = { c68574feffff00 8a01 41 84c0 75f9 2bca 8d85ecfeffff }
            // n = 7, score = 400
            //   c68574feffff00       | mov                 byte ptr [ebp - 0x18c], 0
            //   8a01                 | mov                 al, byte ptr [ecx]
            //   41                   | inc                 ecx
            //   84c0                 | test                al, al
            //   75f9                 | jne                 0xfffffffb
            //   2bca                 | sub                 ecx, edx
            //   8d85ecfeffff         | lea                 eax, [ebp - 0x114]

        $sequence_3 = { 0f4385d8feffff 50 8d85f0feffff 68ff000000 50 e8???????? 68???????? }
            // n = 7, score = 400
            //   0f4385d8feffff       | cmovae              eax, dword ptr [ebp - 0x128]
            //   50                   | push                eax
            //   8d85f0feffff         | lea                 eax, [ebp - 0x110]
            //   68ff000000           | push                0xff
            //   50                   | push                eax
            //   e8????????           |                     
            //   68????????           |                     

        $sequence_4 = { 8bda 8bf9 8d8dd8feffff e8???????? 8d85f0feffff c745fc00000000 }
            // n = 6, score = 400
            //   8bda                 | mov                 ebx, edx
            //   8bf9                 | mov                 edi, ecx
            //   8d8dd8feffff         | lea                 ecx, [ebp - 0x128]
            //   e8????????           |                     
            //   8d85f0feffff         | lea                 eax, [ebp - 0x110]
            //   c745fc00000000       | mov                 dword ptr [ebp - 4], 0

        $sequence_5 = { 8bcc 50 e8???????? e8???????? 8bcc }
            // n = 5, score = 400
            //   8bcc                 | mov                 ecx, esp
            //   50                   | push                eax
            //   e8????????           |                     
            //   e8????????           |                     
            //   8bcc                 | mov                 ecx, esp

        $sequence_6 = { 8d8dd8feffff e8???????? 8d85f0feffff c745fc00000000 50 68ff000000 }
            // n = 6, score = 400
            //   8d8dd8feffff         | lea                 ecx, [ebp - 0x128]
            //   e8????????           |                     
            //   8d85f0feffff         | lea                 eax, [ebp - 0x110]
            //   c745fc00000000       | mov                 dword ptr [ebp - 4], 0
            //   50                   | push                eax
            //   68ff000000           | push                0xff

        $sequence_7 = { c645e400 8bcf ff75e4 53 }
            // n = 4, score = 400
            //   c645e400             | mov                 byte ptr [ebp - 0x1c], 0
            //   8bcf                 | mov                 ecx, edi
            //   ff75e4               | push                dword ptr [ebp - 0x1c]
            //   53                   | push                ebx

        $sequence_8 = { 68???????? c60100 e8???????? 83ec18 c645fc06 }
            // n = 5, score = 400
            //   68????????           |                     
            //   c60100               | mov                 byte ptr [ecx], 0
            //   e8????????           |                     
            //   83ec18               | sub                 esp, 0x18
            //   c645fc06             | mov                 byte ptr [ebp - 4], 6

        $sequence_9 = { 8b1d???????? be02000000 66a3???????? 6a00 }
            // n = 4, score = 400
            //   8b1d????????         |                     
            //   be02000000           | mov                 esi, 2
            //   66a3????????         |                     
            //   6a00                 | push                0

    condition:
        7 of them and filesize < 1073152
}